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<td nowrap="true" class="pageTitle">核对表：设计模型</td><td width="100%">
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<td valign="top">此核对表有助于确保已正确指定设计模型。</td>
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<div class="sectionHeading">关系</div>
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<a href="./../../../core.base_rup/workproducts/rup_design_model_2830034D.html" guid="{8CDAEAD4-5E84-4F50-87FD-3240ED047DE7}">设计模型</a>
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<div class="sectionHeading">主要描述</div>
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<td class="sectionTableSingleCell"><a id="XE_design_model__checkpoints" name="XE_design_model__checkpoints" class="index" key="设计模型（design model）" text="检查点"></a><br />
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<div class="sectionHeading">检查项</div>
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<div class="stepHeading"> 概述</div>
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            明确陈述了模型的目标，并且该目标是可见的。
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            在给定了模型目标的情况下，模型处于适合的详细程度。
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            模型使用的建模结构适于处理手头的问题。
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            模型尽可能简单，但仍能实现模型的目标。
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            模型看来能够适应合理预期的未来变更。
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            设计适合于着手进行的任务（既不过于复杂也不过于高级）。
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            设计看来是可理解和可维护的。
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            设计看来是可实施的。
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<div class="stepHeading"> 层</div>
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            只有五至九个层。
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        <li class="ck">
            明确表明了层定义的理由并一致地加以应用。
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        <li class="ck">
            在设计中考虑了层边界。
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        <li class="ck">
            层用于封装不同类型服务之间的概念上的边界，并提供有用的抽象，抽象将使设计更易理解。
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